Results 41 to 50 of about 9,504 (229)

Leaf micromorphology and genetic diversity analysis of Iranian Hordeum species using ISSR and SCoT markers

Nordic Journal of Botany, EarlyView.
The genus Hordeum (Poaceae), of the tribe Triticeae, comprises approximately 32 species with substantial potential for barley improvement. Hordeum vulgare is an economically important cereal widely cultivated across diverse environments, from the Arctic to desert and humid regions.
Maryam Keshavarzi, Raheleh Tabaripour, Nasrin Farasat   +2 more
wiley   +1 more source

Mapping Arctic Tundra Vegetation Communities Using Field Spectroscopy and Multispectral Satellite Data in North Alaska, USA

Remote Sensing, 2016
The Arctic is currently undergoing intense changes in climate; vegetation composition and productivity are expected to respond to such changes. To understand the impacts of climate change on the function of Arctic tundra ecosystems within the global ...
Scott J. Davidson, Maria J. Santos, Victoria L. Sloan, Jennifer D. Watts, Gareth K. Phoenix, Walter C. Oechel, Donatella Zona   +6 more
doaj   +1 more source

Another Winter Tundra [PDF]

Clinical Chemistry, 2017
Cold, windy, the house creaking, feeling the low temperature from the outside world. Freeze nipping at my bare toes. Barren trees, grey against the monochromatic sky, seemingly lifeless land, snow starts falling, swirling through the air, so soft and gentle. As I peek out the window, it turns to sleet.
openaire   +2 more sources

Experimental and field evidence indicate that islet‐nesting tundra birds experience reduced nest predation and benefit indirectly from high snow goose densities

Oikos, EarlyView.
Landscape features can shape the occurrence and strength of predator–prey interactions by influencing predation risk and prey distribution. In the High Arctic, some bird species select nesting sites with physical features that impede access for their main terrestrial predator, the Arctic fox.
Marylou Beaudoin, Andréanne Beardsell, Éliane Duchesne, Madeleine‐Zoé Corbeil‐Robitaille, Pierre Legagneux, Dominique Berteaux, Joël Bêty   +6 more
wiley   +1 more source

The Ghost of Development Past: the Impact of Economic Security Policies on Saami Pastoral Ecosystems

Ecology and Society, 2011
To ensure economic viability over time, any efforts to meet the Millennium Development Goals need to reconcile conservation with development interventions. Particularly, in marginal and risk prone areas erosion of resilience could make production systems
Vera H. Hausner, Per Fauchald, Torkild Tveraa, Elisabeth Pedersen, Johnny-Leo Jernsletten, Birgitte Ulvevadet, Rolf A. Ims, Nigel G. Yoccoz, Kari Anne. Bråthen   +8 more
doaj   +1 more source

The value of regeneration

People and Nature, EarlyView.
Abstract Millions of hectares of rangelands have been subject to degeneration through overgrazing, agricultural expansion, urbanisation and afforestation. Countering this, regeneration is a natural process whereby rangeland ecosystems revive themselves.
Ethan Gordon, Ada P. Smith, Jennifer Hodbod, Hannah Gosnell, Austin Himes, Matías Hargreaves‐Méndez   +5 more
wiley   +1 more source

Taxonomic diversity and abundance of enchytraeids (Annelida, Clitellata, Enchytraeida) in the Northern Palaearctic. 1. Asian part [PDF]

Biodiversity Data Journal
Enchytraeids, or potworms, are tiny oligochaetes that are distributed worldwide in many terrestrial, freshwater and marine ecosystems. Despite their key role in the functioning of ecosystems, the diversity and abundance of Enchytraeidae are rarely ...
Maxim Degtyarev, Ruslan Saifutdinov, Daniil Korobushkin, Alexander Bastrakov, Margarita Danilova, Ivan Davydov, Anastasia Gorbunova, Polina Guseva, Evgeniy Karlik, Roza Koshchanova, Ksenia Kuznetsova, Iurii Lebedev, Dmitriy Medvedev, Roman Obolenskiy, Anna Popova, Nina Pronina, Leonid Rybalov, Alexei Surov, Akmal Tadzhimov, Alexander Tarasov, Vladislav Vasiliev, Andrey Zaitsev, Elena Zvychaynaya, Konstantin Gongalsky   +23 more
doaj   +3 more sources

Robust Performance Loss Rate Calculation for Photovoltaic Systems in High Latitude Locations

Progress in Photovoltaics: Research and Applications, EarlyView.
This work studies the best methods for performance loss rate (PLR) calculation in high latitude locations, characterized by strong seasonal variability. As the different methods can drastically affect the PLR value, an ensemble method consisting of multiple approaches was validated to be essential in identifying robust PLRs.
Lauri Karttunen, Väinö Anttalainen, Sami Jouttijärvi, Juha A. Karhu, Hugo Huerta, Samuli Ranta, Anders V. Lindfors, Kati Miettunen   +7 more
wiley   +1 more source

Modeled Subsidence of Permafrost Terrain 2025–2050: North‐Central Alaska

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT A large fraction of the Alaska terrain is underlain by regolith that contains excess ice (ice that in volume exceeds the natural pore space). Possible loss of excess ice would lead to ground subsidence, which in turn would disturb and destabilize the ground surface.
Jaakko Putkonen, Hayden Patterson, Robert Chance, Mary Soaper, Anai Caparó Bellido, Aymane Ahajjam, Andrew Wilcox, Sheridan Parker, Timothy Pasch   +8 more
wiley   +1 more source

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson, Philip P. Bonnaventure, Nick C. Noad, Madeleine C. Garibaldi, Rabecca Thiessen, Will Kochtitzky   +5 more
wiley   +1 more source